You might as well compare with these Back Items so you can decide which Back Items you're gonna use for ninja Saga Pvp or in Hunting House for easier killing the boss or your opponent in ninja saga PvP
These Back Items might have better effect . Here we go :

• Ninja Bag

  Increase healing power of scrolls by 20%.
• S54 Ebony Nunchaku

  Increases damage by 7%. Has 20% chance to apply Restriction on enemies who attacks the user for 1 turn.
• Chakra Magatama

  Increase 2% accuracy.
  Additional 5 HP damage upon all attack.
• Christmas Pudding

  Recover 200 HP and 200 CP at the start of every turn but reduce agility by 10.
• Love of coffee

  Prepared with love and empathy. Recovers 100 HP every turn. Increases attack damage by 4%.
• Crimson Lanterns

  Increase attack damage by 6%. Has 6% chance to convert damage taken to HP positively.
• S53 Frostfire Soul

  Increases combustion chance by 15%. Has a 10% chance to freeze enemies who attacks the user for 1 turn. Frozen targets cannot act but takes 80% reduced damage.
• Sealing Pot

  Increases Max. HP by 4% and recover 3% HP at the start of every turn.
• Scroll: Rikugo
• FIFA Whistle

  Recover 100 CP at the start of every turn and reduces damage taken by 80.
• Water Energy Skis
• Blue Pattern Skis
• Chakra Ancestor Flame

  Reduce damage taken by 175. Has 5% chance to convert damage taken to HP positively.
• Ghost Spider

  Reduce 72 HP damage taken.
• Water Shark Skis
• Carrot Time Bomb

  Has 8% chance to freeze enemy who attacks user (1 turn). Frozen target cannot move but damage taken is reduced by 80%. Has 5% chance to convert damage taken to HP positively.
• S82 Amethyst Skull

  Increase purify chance by 5%. Recover 15% extra CP when charge.
• Ink Cloud

  Additional 40 HP damage upon all attack.
• S50 Blood Shade Magatama

  Created with blood and molten lava, the blood shade magatama consumes the life force of anyone with malicious intent. Has a 8% chance to absorb 10% of the attackers max HP and 8% chance to convert any damage taken to HP.
• S18 Evil Spirit Shield

  Reduce 14% damage taken.
• Folding Fan: Shino
• Carnival Fan

  Dance with the Fan during Ninja Saga Anniversary Carnival! Increase all attack damage by 3%.
• S36 Wind Chakra Magatama

  Increase accuracy by 3% and dodge rate by 3%.
• Shoe of Bounty

  Increase dodge rate and critical rate by 4%.
• Ninja Postman Bag

  Increase healing power of scrolls by 50%.
• Prestige Purple Dragon

  Increase attack damage by 5%. Recover 100 HP at the start of every turn.
• Drum: Ako